/*
 * Copyright (c) 2010, Michael Hengler (developer (at) hengler (dot) de),
 * Nikolaus Moll (developer (at) miblounge (dot) net).
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the Jombi project nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL JOMBI BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.miblounge.jombi.impl.widgets.util;

import net.miblounge.miglayout.qt.MigLayout;

import com.trolltech.qt.core.Qt.WidgetAttribute;
import com.trolltech.qt.gui.QLayout;
import com.trolltech.qt.gui.QMainWindow;
import com.trolltech.qt.gui.QWidget;

public final class ChildRemover {

	private ChildRemover() {}

	public static boolean removeChild(final QWidget parent, final QWidget child) {
		boolean result = isChild(parent, child);
		if (result) {
			QLayout layout = parent.layout();
			// remove from layout as well
			if (parent instanceof QMainWindow) {
				layout = ((QMainWindow) parent).centralWidget().layout();
			}

			((MigLayout) layout).takeWidget(child);

			child.setParent(null);
			// TODO is DeleteOnClose good?
			child.setAttribute(WidgetAttribute.WA_DeleteOnClose);
			result = child.close();
		}
		return result;
	}

	private static boolean isChild(final QWidget parent, final QWidget component) {
		if (parent instanceof QMainWindow) {
			return ((QMainWindow) parent).centralWidget().equals(component.parentWidget());
		}

		return parent.equals(component.parentWidget());
	}
}
